b***e
发帖数: 1419 | 1 This is not trivial, man. I am pretty sure this answer is
not right though. I think the first time jia catch up with
yi is at the time 136.385 min, which is 8183.08 s. This is
the point where jia has just finished his 47th "100 meters", and
yi is resting after his 43rd "100 meters". | t****n
发帖数: 1347 | 2 This is my conclusion, anyway, it is too difficult for elementary school:
It depends on how you define "追上": at (8183+1/13)s, A reaches
300m mark while B is already resting there, but then B starts
ahead again before A, so A
*reaches* B there, but does not *exeed* B there.
A will really exeed B at exactly 8840s, while they have run
5061+1/3m and 4661+1/3m.
【在 b***e 的大作中提到】
: This is not trivial, man. I am pretty sure this answer is
: not right though. I think the first time jia catch up with
: yi is at the time 136.385 min, which is 8183.08 s. This is
: the point where jia has just finished his 47th "100 meters", and
: yi is resting after his 43rd "100 meters".
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